Urea is a humectant referred to as hydroxyethyl urea not to be confused with the preservative sdiazolidinyl urea & imidazolidinyl urea which I discuss in more detail below. A healthy skin will typically contain 28 micrograms of urea per square centimetre a dehydrated dry skin can see a reduction of as much as 50% & those with eczema as much as 80%. Please note that due to a recent corporate name change Fine Today Shiseido Co. Ltd. is now known as Fine Today Co. Ltd. As a result the product packaging has been updated & the name Shiseido no longer appears on the package.